The challenge will be to prove that Campbell, who was diagnosed with Alzheimer's disease, lacked the capacity to execute the wills.

Three of Glen Campbell's children, who were intentionally left out of his will, have been given the right to contest the will by a judge, according to Wealth Management.com in “Glen Campbell's Kids Come After the Rhinestone Cowboy's Estate.”

Campbell, who recently passed away, left two wills from 2001 and 2006. The 2006 will names Campbell's fourth wife Kimberly, who is the executor of the estate, and five of Campbell's other children as his beneficiaries. Campbell went public with his Alzheimer's diagnosis in 2011.  However, it's not known how far back his illness began. The legal burden facing his children: prove that he lacked the needed capacity to execute both wills.

If the will is deemed invalid because of lack of capacity or undue influence, the immediately preceding will is resurrected, said one estate planning attorney who is not affiliated with the case. The previous will probably disinherited them also, which is why they must prove the invalidity of both wills.

Kimberly has told a local newspaper that she would not challenge the kid's right to contest the wills and the judge's decision noted the lack of opposition. She has also filed a claim seeking reimbursement from the estate for more than $500,000 to cover the cost of his medical care.

It was also reported that one of his daughters, Debbie Campbell-Cloyd, has filed for a complete accounting of all payments made by the estate, as well as payments to and from a previously undisclosed bank account. She alleges that royalties that should have been deposited into an account controlled by Campbell's estate, were instead deposited into this account, which is now controlled by Kimberly. The singer's former manager has power of attorney over the account.

An estate planning attorney can advise you in creating an estate plan that fits your unique circumstances and may include a blended family.

Resource: Wealth Management.com (Aug. 2, 2018) “Glen Campbell's Kids Come After the Rhinestone Cowboy's Estate”